When you a number of "New Items" and you click "Clean Up Bags" it will reset the new items as well as merge stacks, but it will leave almost every item with the wrong icon, sometimes duplicating icons that you only had one of in the bag (for instance, I now have two abrogator stone items.)

This is very problematic if you don't realize it has happened, as you can accidentally disenchant the wrong item. It requires a reload to fix.

Duplicate of #4.